fixed filesystem erroring out when seeking while not buffered

lib/filesystem.lua

@@ -294,10 +294,7 @@ function filesystem.open(path, mode, buffered) -- opens a file and returns its h
       end
       local startSByte = ((readCursor - 1) % sectorSize) + 1
       local sect = unmanagedProxy.readSector(startSector)
-      unmanagedProxy.writeSector(
-        startSector,
-        sect:sub(1, startSByte - 1) .. data:sub(1, sectorSize - startSByte + 1)
-      )
+      unmanagedProxy.writeSector(startSector, sect:sub(1, startSByte - 1) .. data:sub(1, sectorSize - startSByte + 1))
       for i = 2, (#data + startSByte) // sectorSize do
         if startSector + i - 1 > sectorCount then
           return nil, "not enough space"
@@ -375,7 +372,7 @@ function filesystem.open(path, mode, buffered) -- opens a file and returns its h
       readCursor = 1
       return newPos
     else
-      return component.invoke(self.address, "seek", self.handle, whence, math.max(offset, -currentAbsolutePos))
+      return component.invoke(self.address, "seek", self.handle, whence, offset)
     end
   end
 
@@ -562,8 +559,7 @@ function filesystem.rename(fromPath, toPath)
     copyRecursive(fromAddress, fromAbsPath, toAddress, toAbsPath)
     filesystem.remove(fromPath) -- component.invoke(fromAddress,"remove", fromAbsPath)
   else
-    local handle, data, tmpdata = filesystem.open(fromPath), "",
-        nil                                               -- component.invoke(fromAddress, "open", fromAbsPath, "r"), "", nil
+    local handle, data, tmpdata = filesystem.open(fromPath), "", nil -- component.invoke(fromAddress, "open", fromAbsPath, "r"), "", nil
     repeat
       tmpdata = handle:read(math.huge or math.maxinteger) -- component.invoke(fromAddress, "read", handle, math.huge or math.maxinteger)
       data = data .. (tmpdata or "")